Firewalling
- NetSPoC ("Network Security Policy Compiler". Perl based toolset for generating ACL's and static routing lists for multiple firewalls, from a vendor-neutral textual description of the network topology, services and security rules. Supported firewalls types: Cisc*, PIX, and Linux IPtables.)
- FireHOL (Shell script for translating 'human-readable' firewall rules to Linux IPTtables firewall rules) (cvs) (ml) (deb)
- FIRE|GATE (Bash shell script for setting up a Linux IPtables based router/firewall for a small scale network)
- FIAIF ("FIAIF Is An Intelligent Firewall". Customizable Bash shell script for setting up an IPtables based router/firewall) (cvs) (ml)
- FieryFilter (GTK+ based desktop tool for GNU/Linux Netfilter firewall administration)
- WallFire (Firewall administration toolkit for GNU/Linux Netfilter) (cvs) (ml)
- GuardDog (KDE based Linux IPtables firewall administration tool) (ml)
- Firewall Builder (GTK+ based tool for managing Linux IPTables and IPFilter rule sets) (cvs) (ml)
- cp2fwbuilder (Tool to help migrate from Checkp*int Firewall1 to Firewall Builder) (cvs)
- Smoothwall (GNU/Linux distribution for managing Linux IPTables firewall rules via a web based interface)
- IPCop (GNU/Linux distribution for managing Linux IPtables firewall rules via a web based interface. Code fork of Smoothwall.)
- Lutel Firewall Script (Bash shell script for script for setting up an IPtables based router/firewall)
- Bash Port Knocking (Linux IPtables port knocking system implemented in Bash shell scripts)